Mostrando 1,041 - 1,060 Resultados de 10,994 Para Buscar '"rock ', tiempo de consulta: 0.22s Limitar resultados
  1. 1041
    por Aladwani, Najeeb S.
    Publicado 2022
    “…We investigated the Mianagish Formation's potentiality as a Lower Cretaceous source rock and the included reservoir facies zone in the Umm Gudair oil field. …”
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  2. 1042
    “…By simulating the process of a coal rock collapse impacting the tail beam, the dynamic signal from the coal rock collapse impacting the tail beam to crushing in the coal caving stage of the comprehensive caving working face is studied, and the test is carried out underground. …”
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  3. 1043
    “…Hence, for the first time, we investigated the interaction between bacteria and fungi living on weathered rocks in the Heshang Cave via high-throughput sequencing of 16S rRNA and ITS1 genes, and co-occurrence analysis. …”
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  4. 1044
    “…The results suggest that herbivory of moth‐susceptible trees generated litter at high enough rates to reduce rock substrate availability, thereby suppressing the saxicolous communities. …”
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  5. 1045
    “…BACKGROUND: Popularity of rock climbing is steadily increasing. With its inclusion in the Olympic Games this will likely continue. …”
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  6. 1046
  7. 1047
    “…The similarity of laboratory and atmospheric VLF offers an unique opportunity to study the relation between VLF and rock deformation on at least two different scales and to enlarge the dataset by combining laboratory and atmospheric data. …”
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  8. 1048
    “…Examples are the SEM-based technologies that focus on mineralogical identification at the microscale and the X-ray microtomography systems that allow identifying rock features in three dimensions. Features such as rock texture and mineralogy have a degree of control on how the rock behaves in the processing plant and thus can affect the project's economic feasibility. …”
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  9. 1049
    “…Increased research attention is being given to bacterial diversity associated with lichens. Rock tripe lichens (Umbilicariaceae) were collected from two distinct Antarctic biological regions, the continental region near the Japanese Antarctic station (Syowa Station) and the maritime Antarctic South Orkney Islands (Signy Island), in order to compare their bacterial floras and potential metabolism. …”
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  10. 1050
    “…Existing rock material damage models always ignore the initial damage characteristics of rock materials, and the actual rock materials have initial damage characteristics. …”
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  11. 1051
    “…Energy is often dissipated and released in the process of rock deformation and failure. To study the energy evolution of rock discontinuities under cyclic loading and unloading, cement mortar was used as rock material and a CSS-1950 rock biaxial rheological testing machine was used to conduct graded cyclic loading and unloading tests on Barton’s standard profile line discontinuities with different joint roughness coefficients (JRCs). …”
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  12. 1052
  13. 1053
    “…However, the mechanical behavior of the talus-like rock mass remains unclear as the previous studies mainly focused on similar geomaterials such as the soil–rock mixtures. …”
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  14. 1054
  15. 1055
    “…The process of blasting stress wave propagation and crack propagation is directly affected by the physical properties of the rock mass and internal joints in the rock. In soft and hard rock layers, the blasting process is more complicated since the blasting stress wave needs to penetrate two kinds of rocks with different physical properties and the interface between soft rock and hard rock. …”
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  16. 1056
    “…In view of the problem that anchored bedding rock material is prone to instability and failure under impact loading in the process of deep coal mining, and taking the lower roadway of a deep 2424 coal working face in the Suncun coal mine as the engineering background, a mechanical model of anchored bedding rock material was established, and the instability criterion of compression and shear failure of anchored bedding rock material was obtained. …”
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  17. 1057
    “…Rocks have formed heterogeneous characteristics after experiencing complex natural geological processes. …”
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  18. 1058
    “…It can be used as a new sensor for rock disaster (such as collapse) monitoring and forecasting.…”
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  19. 1059
    por Liu, Xiaolan, Fu, Chuanwei, Li, Shunqun
    Publicado 2022
    “…To maintain the temperature and settlement stability of a subgrade, a combination of graded crushed rock layer and insulation layer may be applied to optimize pavement structures. …”
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  20. 1060
    “…The formation and growth of ice layers in fractured rock masses is one of the main causes of frost weathering in bedrock in cold regions. …”
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